Furnace.



. PURNAGE. APPLICATION HLE JULY 8,191.2.

mam@

2 SHEETS-SHEET l.

Patentd Jan. 6, 1914.

J. 'fx WOLVIN.

PURNAGB.

APPLIUATION FILED JULY 5,1912.

atented Jan. 6, 1914.

2 SHEETS-SHEET 2.

sidingt,r at St. (llair7 in the county of St. Clair bmlying the invention with portions broken .niy latent #ldldfl dated June 5, 1913.

ychamber ol' the boiler. `ho\\'e\'er. that suiall particles of fuel are .other new and useful features in the con- .lar View of the rear portion of the furnace `structure formed of. brick-work, in the for- JOHN F. WOLVL'N, 0F ST. CLAR, MICHGAN.

FURNACE.

. Application filed July 8, 1

To all whom 'muy conero/1.'

Be it known that I, Jon-N l". WOLVIN, a citizen of the United States of Amerie-a, re-

and State' of Michigan, have invented oertain new and 'useful Improvements in Furnaces, of which the following is a specification7 reference being had therein to the ac- ..onipanying drawings.

ThisIv invention relates to furnaces:j andv more particularly to the type disclosed by The furnace disclosed int-bis patent is especially adapted for burning crushed or powdered fuel, in which a very high 'legree of eliieiency is seein-ed by the niauner in which the fuel and air are introduced into the .furnace. lnhis furnace a lluid supply' pipe is used together with means for introducing fuel into the lluid whereby the. fuel will be projected or discharged in the combustion ll has been found liable lo escape wilhoul -being consumed, therefore, the present application has for its object to provide a` construction whereby any desired proportion of the products. of combustion may be returned to the eonibustion chamber together with a sullieient quantity of fresh air lo maintain combustion, and said returned products and air heated to a high degree ol' temperature before, ei'itering the combustion chamber.

' 'uriher object is lo provide certain struction and arrangement of parts, the invention consisting in the matters hereinafter set forth and more particularly pointed out in lhe claims reference being Ahad to the ac companying drawings in which- Iiigure 1 is a longitudinal vertical section through the forward end of a furnace ernaway to shorten the figure; Fig. 2 is a simiwith portions broken away to shorten the figure; Fig. 3v is a transverse section on the line X-X of Fig. 2;` Fig. 4 is a section on the line of Fig. 2; and Fig. 5 is a section on the line z-z of Fig. 1.

As shown in the drawings l is a suitable Ward endlof'w'liich is an air chamber 2, the forwardend' Wall of which foi-Ins a support Specification of. Letters Patent.

l'checker brick work.

.around the tubes Qtand thefl'u Eatented Jan. e?, 119114. 912. seriai no. 705,159.

by any suitable ineansthrougn a tube Il into a blow pipe 5 for blowing the fuel into the open forward end of the lire chamber G,

seani or other fluid under pressure beingr @a employed to blow the fuel into the lire. The

nieans for introducing the fuel into the fire chamber doer.; not, however, lforni a part of this inveuiion'and any suitable means may be used. g5

The structure l may be fornied cylindrical in cross section as shown if so desired and .the tire chamber G is preferably tubular in forni and located within the structure l with a space T between its wall S and the outer 7g wall of the structure. '.lhe forward end of the lire chamber opensl into the :tir chai'nber through a transverse wall l0 which pro.-

vided with ogenings il forming a means of lcinninunicaion between the, chamber 3 and le the annular space T around the fire chainber. The rear end of the fire chamber opens into an expansion chamber @through a vertical division wall lf-hand arranged' at suitable intervals across the rear end' of the lire ,5g chamber a series' of baill'es 14 formed of A siniilarbal'lie 15 lends across the expansion chamber i2 at a .short distance from the forward end of a tubular boiler 1G which is supported within 35, the structure' with its'ire tubes extending longitluiinally of the axis of the structure. The wall i7 surrounding the boiler is formed with two series of passages 1S and 19. the passages 18 being open at theirv forward end into the annui: r space 7 around the lire chamber, and the passages 'i9 being; formed with inwardly extending end portions 2O in the `wall 1'3 which open' into the rear end" of the fire chamber just forwardly of the rearinost battle of the series ofbatiies 14.

vLocated at the rear end of and in alinenient with the structure l is an air heater 2l comprisingv a cylindrical outer shell 2ihai'- ing a front head 23 and. a rear head.. 2l. The. 16@ front head Q3 serv-es to elosetne rear end of' the structure l in which a chamber is pra vided vbetween said head and the rear end of the boiler i6. Extending between these heads and' opening through. the saine are m5 tubes 26 and sleeved' upon tlieset-ubesvare i.

air' heating tubes Qof a considerably larger diameter than the tubes 26 toprovid'e 'a spaee jthrough partitions 28 'andff 2 ai short distance from' the' respectively. The space .het

' onen lrru' culs of he whos of tlm hsulor io lrmr the products of roinhusllon through snul i tubos. n conduily ronnmting the outlm' of the Su'clon (lericw willi tha rrur and heater to ronduct into the healer nrouiul saidtulws. lw products; of combustion disclaim-,gul h y Suhl :-;1| 'lion device, meunri jor roneluciluj tlul nrorlurts of comhurzion 'lfruni ih@ forward und of the luuvr ino thv lire rlurinlwr` nml menus for' introducing nir info thv forward ruil ol thaA lire ('luinilnr to maintain roxnhusiou llicroin.

I. lu :i f'urnars.r ihr roiuhinntion rauh a lire. rhzuuheix nml n boiler nrramged :u alle reni' oljhe lire cluunher. of :i healer surf necterl to the rmi und of ilul hoilor und con prising n plurnlitj,Y nl' fir@ tuhas und u plurality of nir heating tuhrs surrounding the hunter being also formell with n chamber surrouiuling the nir heating Luhe :1 sui'ion llvrice uounerled lo th@ fire lnhs lo draw proilucs of uomhusion from the fire chainher hrough haul tubes and discharge na szune, :x ron-:luik for connecting thix outlet' of the suction device: wit-,h this reni' end of t'ie :xir heating tubes, uxvnnfs for conueciing the 'cu'u'ard muh,y o1 the nir heating nhes n'ih the lire Chamber, nieuws for admitting air to lhe rlnnnher urroimding the nir heating tubrs, :unl means fur conducting lhs :ur from said rhzunher into the forwnrll end of the chamber.

Fi. vln :i furbizia-cy the combination with a structure formed with n lire chzunher and a 'chnmhr at. the rear thereof, u boiler. in the 'reurmost Chamb-er haring longitudinal fire tubes, n lnsaer connected to .lhs rear end of theVchmnnerbonhxining the holler and ceinprising a cylindrical shell .haring heads, tubes extending ,through Said shell and opening thrnugh said heads, pnrtitions vwithin the shell, air hearing tubes snr- ,rounding lle said tubes und opening ai; 'hexr en-fifa through sind partitions,

of thC i olf' produrre: nl' mnihuion rherm'luough anni the proilucin of roiulnmhm from the :pauw helium-n rho forward lwzu of ihr lmwsr null the :uljnwul puriii'ion tu ronaluci ihr4 :mue into thv lirr rhniuheu nul-Linn for iuhniting nir lo [he hunter. :nul nrc-(ins 'for coiulucting h@ nir from tho hrzalvr io he lo1=..url und of lw lire chamber. l

'l'luf coxnhinziion of n .urna-lure fornrerl ith :i lire rhiunlmr and :in annular spare surrozunling will rhauulm sind .vih nu. @X- punsion rlninxlwr :1i thv roar oi he iru rlininher haring n piurnliy o Nuages foi-ined in ils outer will, vermin of, (i pussnges connecting with Kliff para zuuunrl the lire rluunher :and o'rhrr owning into tlm rear rnd of th@ lire -hnniher., :i boiler haring longitudinal lire ubr positional nl the rear of lxr expnnion chamber within l'ln-r srur ture u'ih :i -rhnxnher at the rmi of ih@ lmiler. a 'nemer hnving hands mu; muh;I irv inlws extending longitudinally huurr :nul opening hrnugh Suhl lnnuls` lrnnm'ersc paritions in he hwitrr :1pm-eil from sniil heads und forn' ig chambers; :il the unda ofthe hanter, Jr healing nhes surrounding `lha hre when und @polling through ih@ partition into :said chambers. ninans for mhnilingair to lhe hcner around the nir hunting luhrs, ine pimngeu in rho wall of he sirnctnru whivh nre ronnferrd in the 5pm-v surrouuling ihr lire arhznnher being connectrll to he chamber of lle nir heater lo rereilie nir ih'erefronn nml ilupussages opening into ih@ rear @nd of the lire rlnunlmr being ronnerlerl willi tiicchzuu- )er in he forward end of he heuer, n muy ion derive cnnnsrtfcl to th@ rear rnd of tlm hamer io drew products of conihnstion through the fire uhm n conduit connecing lh@ millet of h@ suction device with ih@ chamber in he rear and G' rh@ heater? :mil c he sncinn device 

